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Resonant X-ray Raman scattering from dense gases and solutions
KTH, Superseded Departments, Biotechnology.
KTH, Superseded Departments, Biotechnology.ORCID iD: 0000-0003-0007-0394
KTH, Superseded Departments, Biotechnology.ORCID iD: 0000-0002-1763-9383
2001 (English)In: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 346, no 06-maj, 437-442 p.Article in journal (Refereed) Published
Abstract [en]

To complement conventional theory of resonant X-ray Raman scattering (RXS) adapted either for rarefied gases or solids, we propose a theory and corresponding analysis for RXS from dense gases and solutions. We show that the dephasing broadening of the spectral lines due to interaction with buffer or solvent particles qualitatively changes the physics of the X-ray scattering. The dephasing results in an additional, two-step (TS) scattering, contribution to the RXS cross-section, which interferes with the Raman one-step (OS) channel and which shows a nondispersive behaviour, This results in a doubling of the spectral lines by detuning the excitation frequency away from resonance. The theory is demonstrated numerically for RXS of formaldehyde in solution.

Place, publisher, year, edition, pages
2001. Vol. 346, no 06-maj, 437-442 p.
URN: urn:nbn:se:kth:diva-21019ISI: 000171582700014OAI: diva2:339716
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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